Telephone headset



April 28, 1925; I

, F1. B. BAKER TELEPHONE HEADSET Filed Feb. 23, 1923 Patented Apr. 28, 1925.

umren s'rares 1,535,284 PATENT FHCE.

RANDALL 1B. BAKER, 0]? VVATERTGV/"N, MASEAGHUSETTS, .ASfSIGNOR TO THE HOLIZER- GABO'I ELECTRIC COMPANY, 07: ROXIBURY, NEASSACHU$ETTS, A CQRPORATION OF irassac ruserrs.

TELEEHONE HEADSET.

Application filed February 23, 1923. Serial No. 620,568.

f0 all "whom it may concern:

Be it known that I, RANDALL B. BAKER, a citizen of the United States, residing at ater-town, in the county of Middlesex and State of Massachusetts, have invented cer tain new and useful Improvements in Telephone Headsets; and 1 do hereby declare the following to be a. full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to an improvement in telephone head sets.

A head set comprises a pair of telephone receivers, a head band or a pair of head bands extending over the head and serving to connect the two receivers together, and some contrivance for attaching the receivers to the ends of the head bands.

The object of the present invention is to produce a device for connecting receivers and head bands which is simple in construction, not easily disorganized or got out of order, and capable at the same time of adjustment so that the receivers may be adjusted with respect to the position of the head bands to accommodate varying p0s1--,

tions of the receivers with relation thereto.

In the accompanying drawings illustrat ing the preferred form of the invention, Fig. 1 is a perspective view of the head set, the receivers being omitted; Fig. 2 is an elevation of the connecting device; Fig. 3 is a vertical sectional elevation of the same; Fig. 41-, is a front elevation of the clamp cup; Fig. 5 is a rear elevation of the clamp follower; and .6 is a view of the spring removed.

The illustrated embodiment of the invention is described as follows: The head bands 10 are provided at their ends with wires 11 by which their ends are attached to the con necting device. The connecting device co1nprises a clamp cup 12, a clamp follower 13, held together by a screw 14, between which clamp members the ends of the wires 11 are clamped, and a spring follower 15, which encloses a spring 16. This connecting device carries the stem 17 of the receiver fork, between the arms 18 of which is pivotal] y supported the receiver.

The clamp cup comprises a disk 20 provided with a flange 21 or lip at its edge. This flange is cut away at 22 to form notches through which the wires 11 ,of the head bands enter the space between the clamp cup and clamp follower. The clamp follower consists of a disk 28 rabbeted at 2%. The diameter of the disk is slightly less than the inside diameter of the clamp cup flange, so that it is received within the flange of the clamp cup. The ends of the wires 11 extend into the space between the clamp cup and the clamp follower and are bent to conform to the annular space formed between the bottom of the rabbet 2d and the front face of the clamp cup disk. From the center of the clamp follower disk there rises the post 25, which is provided with a hole to receive the stem 17 of the receiver fork. The screw 1 1 is received in a central screw-threaded hole in the clamp follower disk, the clamp cup being provided with a hole to receive the head of the screw.

The clamp cup, clamp follower, clamp screw and head band wires are assembled in the following manner. The curved ends of the wires are laid on the clamp cup in the position shown in Fig. 2, the clamp follower is put in place, the screw 14: is screwed up tightly, and then the clamp disk is supported on an anvil or base and aheavy pressure is exerted on the clamp follower disk which forces the clamp follower and clamp cup together, indenting the surfaces of both cup and follower where the ends of the wires 11 lie. Thus in the clamp cup are formed two head band wire recesses 26, and in the clamp follower are formed two head band wire recesses 27. The screw 1 1 is then again screwed up tight and the head band wires are thereby rigidly secured in place in the clamp. If for any purpose it is desired to disassemble the clamp to remove the head bands it is easily done by removing the clamp screw 14. Then the clamp may be reassembled and the wires of the head band will locate themselves in the wire recesses of the cup and follower, and when the screw is tightened up again the clamp will be.

in the posts 25, so that the stem 17 of the receiver forks cannot unintentionally be dis engaged from the connecting device. But if it is desired to disconnect it for any reason, it may be easily accomplished by removing the screw 28, whereupon the stem 17 may be slid out through the hole in the post 25. This frees the spring follower and spring without detaching the head band from the clamp. The stem 17 of the receiverforks is easily reinserted in place by first applying the spring to the post of the clamp follower, then putting on the spring follower and holding it down withthe fingers while the steni17 is thrust through the hole in the post 25, after which the screw will be re placed in the end of the. stem 17 and the connection is again made permanent.

It will'be observed'that the clamp for securing the headbands to the connecting device maybe dismantled without removal of the-receiver forks from the connecting device. It will also be observed that the receiver forks-may be removed from the-connecting, device without disturbing the attachment of the clamp to the head bands. The connecting device commends itself by reason ofthese facts, andalso by reason of the'facti that it is devoid of any projecting,

part'or device which wouldratch in the hair of. the wearer of 'the head set. Also that the head bandmay be putin place onthe head and the: receivers may easily be adjusted with relationthereto:by simply holding the clampswhile. the receivers are moved up and downruntil thecorrect position is secured. It will also be observed-that when the end wires-'11 are clamped between the clamp cup and the clamp follower the. fact that the end wires'lierin recesses in:tliese'two parts prevents relative. turning; ofthe follower with respect; to the cup, thereby maintaining the angulars'position-of the'head band and receiver forkstem. The. recesses inthe flange of the clan1p-cup-i= would'sufiice to prevent the-turning. of! the'cup with respect to the head bands, and the recesses in the surface of the, follower embracing asthey do the endwvireswofthe-head bands would prevent the'turning of: the followerwith respect to the cup, and therefore with respect to the head band. The end wire-s'act as keys to lock. the clamp members from relative rotational movement.

Having. thus described the invention,,what is claimediis:

1. A telephone headset having, in combination, aiheadband. provided with an end portion, a receiven carrier provided with a stem,- a clamp connection: provided with a holestoireceive thestem and a recess to receive. the end: portion of the head band,

means for clamping the end portion in the recess of the clamp connection, and resilient means for holding the stem thereto.

2. A clamp connection for telephone head sets having, in combination,- a clamp cup, a clamp follower, the elampcupand clamp follower being provided with end wire recesses adapted to receive and locate the end wire of the head band, and a screw for clamping the follower and cup together on the endportion of the head band, said recesses preventing turning of the clamp follower with respect to the clamp cup.

3. A clamp connection for telephone head sets having, in combination, a clamp cup provided with a flange, a notch in the flange adapted to permitthe entrance of the end wire of ahead band into the cup, a clamp follower adapted to be received in the cup, said clamp follower being provided with an end wire recess to receive the endv wire, a screw for clamping the cup and follower together, such recess acting to prevent turning of the follower with respectto the cup.

hA. clamp connection for telephone head sets having, in combination, a clamp cup and follower, between the surfaces of which the end portion of a head bandis adapted to be received, means for clamping the two parts together so that they are incapable of turning withrespect to each other, said follower being provided with a post having a hole in it to receive the stem of the receiver carrier, and a spring contrivance. to press against the stem and hold it in adjusted position.

5. A telephone head set. having, in combination, a head band provided with a nonstraight end wire, a clamp consisting of two members between which the end wire is received, such clamp members having head band wire recesses fitting, the non-straight portion of the wire for, holding it from movement, a screw for holding the two clamp members together, a receiver carrier, and means for securing the carrier to the clamp.

6. A telephone headset having, in combination, head bands provided-with end wires, a receiver carrier. :1 clan'ip cup provided with a flange having notches for receiving the end wires, a clamp follower provided-with a post having a hole for receiving the receiver carrier, a screw for holding lhe clamp cup and follower together. the cup and follower being provided with recesses for holding the. end wires to prevent relative turning of the cup and follower, a spring follower, and a coil spring taking between the clamp follower and the spring follower for resilientlv holding the receiver carrier on the clamp.

RANDALL B. BAKER. 

